<!DOCTYPE html>
<html lang="zh-CN">
<head>
    <meta http-equiv="Content-Type" content="text/html;  charset="UTF-8">
    
    <title>简易的在线计算器</title>
</head>
<body>
    <form action="/test_cgi" method="get" align="center">
        操作数1：<br>
        <input type="text" name="x"><br>
        操作数2：<br>
        <input type="text" name="y"><br><br>
        <input type="submit" value="计算">
    </form>
    
</body>
</html>
 